US8407921B2ActiveUtilityA1

Backlit logo device

59
Assignee: Hu da-gangPriority: Apr 18, 2011Filed: Jun 30, 2011Granted: Apr 2, 2013
Est. expiryApr 18, 2031(~4.8 yrs left)· nominal 20-yr term from priority
G09F 2013/222G09F 2013/1831G09F 2013/1854G09F 13/22G09F 13/18G09F 2013/1804
59
PatentIndex Score
1
Cited by
3
References
1
Claims

Abstract

A backlit logo device includes an elongated light guiding member and two sources. The two light sources are arranged at opposite ends of the light guiding member. The light guiding member includes a display surface. The display surface includes a transparent logo so light from the light sources passes through the logo. The light guiding member further includes a light reflecting surface opposite to the display surface. The light reflecting surface includes a plurality of light diffusing portions formed in a middle portion of light reflecting surface. The light diffusing portions are configured to diffusely reflect the light from the light sources to the display surface.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A backlit logo device comprising:
 an elongated light guiding member comprising a display surface, a transparent logo formed on the display surface; and 
 two light sources arranged at opposite ends of the light guiding member; 
 wherein the light guiding member further comprises a light reflecting surface opposite to the display surface, and a plurality of light diffusing portions formed in a middle portion of the light reflecting surface, each of the light diffusing portions has an arc-shaped profile, the light reflecting surface is a flat surface and the light diffusing portions protrude from the light reflecting surface, the light diffusing portions are configured to diffusely reflect light from the light sources to the display surface.

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